Central Nervous System DiseasesAutonomic Nervous System DiseasesAutonomic Nervous SystemNervous System DiseasesCentral Nervous System Viral DiseasesMeningoencephalitisCentral Nervous System InfectionsCentral Nervous SystemBrainSubacute Sclerosing PanencephalitisAIDS Dementia ComplexBrain DiseasesMaus Elberfeld virusCerebrospinal FluidMeningesDemyelinating DiseasesEnterovirus InfectionsHeart RateParasympathetic Nervous SystemAstrocytesNeuronsSympathetic Nervous SystemNervous SystemDisease Models, AnimalMagnetic Resonance ImagingGanglionic BlockersAutonomic DenervationVagus NerveAutonomic PathwaysAutonomic AgentsGalvanic Skin ResponseAutonomic Nerve BlockLamin Type AArrhythmia, SinusHeart Conduction SystemBlood PressureCells, CulturedCardiovascular Physiological ProcessesDigestive System DiseasesElectrocardiographyElectrocardiography, AmbulatoryEnteric Nervous SystemAtropineTrimethaphanPeripheral Nervous SystemDysautonomia, FamilialTime FactorsPeripheral Nervous System DiseasesPropranololHeartCause of DeathCardiovascular SystemCardiovascular Physiological PhenomenaBaroreflexHexamethoniumCircadian RhythmParasympatholyticsMuscarinic AntagonistsAutopsyParasympathectomyValsalva ManeuverRisk FactorsCentral Nervous System NeoplasmsGanglia, AutonomicNorepinephrineGlycopyrrolateCatecholaminesChlorisondamineMassageImmunohistochemistryArrhythmias, CardiacImmune System DiseasesPancreatic PolypeptideInfant, NewbornHypoventilationEndocrine System DiseasesPsychophysiologyAdrenergic AgentsNervous System Physiological PhenomenaOxymetazolineShy-Drager SyndromeDogsBradycardiaCardiography, ImpedanceRelaxationStress, PsychologicalMutationSupine PositionAdrenergic beta-AntagonistsNeurosecretory SystemsTilt-Table TestPeripheral NervesVagus Nerve StimulationAnalysis of VarianceRespirationSignal Processing, Computer-AssistedAtrial FunctionHemodynamicsCohort StudiesNeuroimmunomodulation